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  <title>CSS Test: font-size - ex unit</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/fonts.html#font-size-props" />
  <link rel="help" href="http://www.w3.org/TR/css-fonts-3/#font-size-prop"/>
  <meta name="flags" content="ahem" />
  <meta name="assert" content="'em' and 'ex' length values when defining 'font-size' property refer to the computed font size of the parent element." />

  <style type="text/css"><![CDATA[
  div
  {
  font-family: Ahem;
  line-height: 1;
  margin-top: 8px;
  }

  div#parent {font-size: 40px;}

  div#test {font-size: 20px;}
  
  div#control, div#test {font-size: 2.5ex;} 

  div#control2 {font-size: 80px;}
  ]]></style>

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 <body>

  <p>Test passes if the 3 black squares have <strong>the same width and the same height</strong>.</p>

  <div id="parent"> 

    <div id="control">C</div>

    <div id="test">T</div>

  </div>

  <div id="control2">2</div>

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